Glossary

A

A/B Testing A method of comparing two versions of something - an email subject line, a landing page, a button - to determine which performs better.

API A set of rules that lets different software applications talk to each other.

C

Caching Storing copies of data or computed results temporarily so future requests for the same data can be served faster.

CDN A network of servers distributed globally that delivers content faster by serving it from locations closer to the user.

D

DNS The internet's phone book - a system that translates human-readable domain names into IP addresses computers can use.

H

Headless CMS A content management system that decouples the content backend from the frontend presentation layer, delivering content via API to any channel or device.

O

Open Rate The percentage of email recipients who opened a given email campaign, used as a primary measure of subject line and sender performance.

R

Responsive Design An approach to web design that makes layouts and content adapt fluidly to any screen size, from mobile phones to large desktop monitors.

S

SSL/TLS The cryptographic protocols that encrypt data in transit between a browser and a server, shown as the padlock in your address bar.

W

Webhook An automated HTTP callback that sends real-time data from one application to another when a specific event occurs.